book.c

C Primer Plus(第五版)中文版,不用多说了

/* book.c -- one-book inventory */
#include <stdio.h>
#define MAXTITL  41      /* maximum length of title + 1         */
#define MAXAUTL  31      /* maximum length of author's name + 1 */

struct book {            /* structure template: tag is book     */
    char title[MAXTITL];
    char author[MAXAUTL];
    float value;
};                       /* end of structure template           */

int main(void)
{
    struct book library; /* declare library as a book variable  */
    
    printf("Please enter the book title.\n");
    gets(library.title); /* access to the title portion         */
    printf("Now enter the author.\n");
    gets(library.author);
    printf("Now enter the value.\n");
    scanf("%f", &library.value);
    printf("%s by %s: $%.2f\n",library.title,
          library.author, library.value);
    printf("%s: \"%s\" ($%.2f)\n", library.author,
          library.title, library.value);
    printf("Done.\n");
          
    return 0;
}